Ok guys, let me take a swing at this. I am currently running a 275/45-20 on an 8.5"x20" wheel(Boss-#327)+. I will be going to a 285/35-22 next year on a 9.5"x22" wheel. The offset is 35mm for those who want to know. I have no clearance issues as I have stayed with the stock rolling diameter, so all my instruments read true. Now, I use a Toyo Proxes-STII and will use them for the new rims(Helo #866). This past season was the third year that I've had those tires. 50K+ and still has 25-30% of the tread left. They handle great on dry roads. No slip on sweeping wet turns, they wear like iron and I highly reccommend them as thier cost is much, much lower than many name brands. So take it for what its worth, your call, Bob